Duncan Campbell may refer to:
Military figures Sir Duncan Campbell, 2nd Baronet (1597–1645), commander of troops in Ireland Duncan Campbell (died 1758), Scottish nobleman and British Army officer Duncan Campbell (British Army officer, died 1837) (1763–1837), British Army general, MP for Ayr Burghs 1809–18 Duncan Carter-Campbell of Possil (1911–1990), British Army colonel
Musicians Duncan Campbell (trumpeter) (1926–2013), Scottish musician Duncan Campbell (singer) (born 1958), lead singer of UB40
Politicians Duncan Campbell, 1st Lord Campbell (died 1453/4), Scottish nobleman and politician Sir Duncan Campbell, 2nd Baronet (1597–1645), MP for Argyllshire 1628–43 Duncan J. Campbell (1845–1882), physician and politician, Nova Scotia, Canada Duncan Campbell (Unionist politician) (1876–1916), MP for North Ayrshire 1911–16
Journalists Duncan Campbell (journalist, born 1944) (1944–2025), British journalist and author, working particularly on crime issues Duncan Campbell (journalist, born 1952), investigative journalist and television producer, best known for his work on Signals Intelligence
Others Duncan Campbell (soothsayer) (1680–1730), Scottish deaf-mute and professed soothsayer Duncan Campbell (revivalist) (1898–1972), Scottish preacher Duncan Campbell (snooker player) (born 1966), Scottish snooker player Duncan Campbell (artist) (born 1972), Irish artist Duncan Campbell (snowboarder) (born 1997), New Zealand snowboarder Duncan B. Campbell, British scholar Duncan Campbell (settler) (1781–1856), British settler to South Africa Duncan Campbell (inventor) (born 1955/56), Canadian co-inventor of murderball
See also Duncan Campbell Ross (1871–1961), Canadian lawyer and Liberal politician